http://www.instructables.com Wed, 22 May 2013 14:47:51 PDT BLOX v1.01 http://www.instructables.com/id/Mini-Siege-Engines/
Mini Siege Engines - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FZC/PA0N/H19RT1K9/FZCPA0NH19RT1K9.SQUARE2.jpg http://www.instructables.com/files/deriv/FZC/PA0N/H19RT1K9/FZCPA0NH19RT1K9.SQUARE.jpg http://www.instructables.com/files/deriv/FZC/PA0N/H19RT1K9/FZCPA0NH19RT1K9.SMALL.jpg WYE_Lance Ah catapults - possibly the most engaging and exciting project to introduce students to some fundamental ideas in physics and engineering. Stored energy, trajectory, the value of density in projectiles, and of course firing stuff across the room - so much to learn, and yet so much fun to be had! ...
By: WYE_Lance

Continue Reading »]]> Mon, 30 Apr 2012 11:54:36 PDT http://www.instructables.com/id/Catapult-To-Go/
Catapult To Go - More DIY How To Projects]]> http://www.instructables.com/files/deriv/FSI/J7UG/FWMO365P/FSIJ7UGFWMO365P.SQUARE2.jpg http://www.instructables.com/files/deriv/FSI/J7UG/FWMO365P/FSIJ7UGFWMO365P.SQUARE.jpg http://www.instructables.com/files/deriv/FSI/J7UG/FWMO365P/FSIJ7UGFWMO365P.SMALL.jpg Iliketomakestuff In this Instructable I will show you how to build a neat little catapult. It requires only a few materials and about an hour of your time. This can be made out of foam board, balsa wood, or various other sturdy, but light materials. And it shoots pretty far for a catapult of its size. I got mine to ...
By: Iliketomakestuff

Continue Reading »]]> Mon, 6 Jul 2009 13:17:41 PDT http://www.instructables.com/id/Launch-It%3a-Torsion-Spring-Catapult/
Launch It: Torsion Spring Catapult - More DIY How To Projects]]> http://cdn.instructables.com/FU4/PURA/F54HJ9RD/FU4PURAF54HJ9RD.SQUARE2.jpg http://cdn.instructables.com/FU4/PURA/F54HJ9RD/FU4PURAF54HJ9RD.SQUARE.jpg http://cdn.instructables.com/FU4/PURA/F54HJ9RD/FU4PURAF54HJ9RD.SMALL.jpg i make shooting things True catapult that uses a extremely tightly wound string to power it, it fits in the palm of your hand, it cost under $20. all supplies can be purchased at Michaels. fires small foam objects 40 feet aprox 1053 feet to scale, about 7.5FPS when firing a 14g weight (twice the weight of the catapult its...
By: i make shooting things

Continue Reading »]]> Thu, 16 Aug 2007 10:31:55 PDT